Exodus 7:1-3

Living Bible

7 Then the Lord said to Moses, “See, I have appointed you as my ambassador to Pharaoh, and your brother, Aaron, shall be your spokesman. ² Tell Aaron everything I say to you, and he will announce it to Pharaoh, demanding that the people of Israel be allowed to leave Egypt. ³ But I will cause Pharaoh to stubbornly refuse, and I will multiply my miracles in the land of Egypt.